Mercedes-Benz CS1000 - Manual (Page 100)

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100
FAULT DIAGNOSIS
1. IGNITION : Position 1
2. Left Temperature selector wheel : HI
Right Temperature selector wheel : LO
3. Within 20 seconds press the REST and EC buttons simultaneously for more than 5 seconds.
4. The LED in the RECIRCULATE button flashes and "OFF" appears on the display.
5. Press the right AUTO button until all DTC's are displayed and recorded.
6. To erase all codes must be read out. Press both AUTO buttons simultaneously for more than 2 seconds. "d"
will be displayed on the left and "FF" is displayed on the right. The erase can be canceled by pressing the
AUTO button.
7. Reset temperature selector to normal setting.
8. IGNITION : OFF to end the test program.
FAULT CODES - 140 Chassis from 9/95
DTC Readout Description
026 CAN Bus Communication
226 In-Car Air Temperature Sensor (B10/4)
227 Outside Air Temperature Sensor (B10/5) to 1996, (B14) as of 1997
228 Left Heater Core Temperature Sensor (B10/2)
229 Right Heater Core Temperature Sensor (B10/3)
230 Evaporator Temperature Sensor (B10/6)
231 Engine Coolant Temperature Sensor (B11/4)
DFI or IFI models Right Engine Coolant Temperature Sensor (B11/10) to 1996
232 Refrigerant Pressure Sensor (B12)
233 Refrigerant Temperature Sensor (B12/1)
234 Sun Sensor (B32)
235 Emissions (Refrigerant Leak) Sensor (B31)
241 Refrigerant Level
416 Coolant Circulation Pump (A31m1)
417 Left Duovalve (Water Valve) (Y21y1)
418 Right Duovalve (Water Valve) (Y21y2)
419 A/C Compressor Electromagnetic Clutch (A9k1)
420 Closed (Idle) Throttle Speed Increase
421 Pulse Module (N65)
422 Serial Interface Connection (K1) to Instrument Cluster (IC)
423 Switchover Valve Block (Y11)
424 Activated Charcoal Filter Actuator (A32m2) : OPEN
425 Activated Charcoal Filter Actuator (A32m2) : CLOSE
432 Maximum Heat